Transosseous suture anchor

1. A knotless suture anchor comprising:

an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an interior longitudinal passageway extending at least partway from the proximal end toward the distal end, a proximal opening communicating with the longitudinal passageway nearer the proximal end, and a plurality of distal openings communicating with the longitudinal passageway nearer the distal end; and

a suture routed through the plurality of distal openings, with a first portion extending within the longitudinal passageway between the proximal opening and one of the distal openings, a second portion contiguous to the first portion and extending out of the anchor body, a third portion contiguous to the second portion and extending within the longitudinal passageway proximally to distally, and a fourth portion contiguous to the third portion and extending along the exterior surface distally to proximally.

2. The knotless suture anchor of claim 1 further comprising an interference member insertable distally into the longitudinal passageway to secure the first portion of the suture and the third portion of the suture within the longitudinal passageway by compressing the first and second portions between the interference member and the anchor body.

3. The knotless suture anchor of claim 1 further comprising a proximal member joined to the anchor body by a frangible connection.

4. The knotless suture anchor of claim 3 further comprising an inserter operable to engage the proximal member in axial force transmitting relationship in a first direction, the inserter having a pushrod mounted for axial translation within the inserter, the pushrod being operable to engage an interference member in axial force transmitting relationship in a second direction opposite the first direction and expel the interference member from the proximal member into the anchor body.

5. The knotless suture anchor of claim 1 wherein the plurality of distal openings comprises first and second openings through a sidewall of the anchor body nearer the distal end than the proximal end.

6. The knotless suture anchor of claim 1 wherein the first portion of the suture passes through at least one of the plurality of distal openings and the third portion of the suture passes through at least another of the plurality of distal openings.

7. The knotless suture anchor of claim 1 further comprising:

a first suture threader extending within the longitudinal passageway, the first suture threader extending through the proximal opening to a first threader loop end and the first suture threader extending through a first distal opening of the plurality of distal openings to a first threader grip end, the first threader loop end defining a suture capture loop; and

a second suture threader extending within the longitudinal passageway, the second suture threader extending through the proximal opening to a second threader grip end and the second suture threader extending through a second distal opening of the plurality of distal openings to a second threader loop end, the second threader loop end defining a suture capture loop.

8. A knotless suture anchor comprising:

an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an interior longitudinal passageway extending at least partway from the proximal end toward the distal end, a proximal opening communicating with the longitudinal passageway nearer the proximal end, and a first distal opening communicating with the longitudinal passageway nearer the distal end;

a first portion of a suture extending within the longitudinal passageway between the proximal opening and the first distal opening, a second portion of the suture contiguous to the first portion and extending out of the anchor body, a third portion of the suture contiguous to the second portion and extending within the longitudinal passageway proximally to distally, and a fourth portion of the suture contiguous to the third portion and extending along the exterior surface distally to proximally; and

an interference member insertable distally into the longitudinal passageway to secure the first portion of the suture and the third portion of the suture within the longitudinal passageway.

9. The knotless suture anchor of claim 8 further comprising:

a proximal member joined to the anchor body by a frangible connection; and

an inserter operable to engage the proximal member in axial force transmitting relationship;

a first suture threader extending within the longitudinal passageway, the first suture threader extending through the proximal opening to a first threader loop end and the first suture threader extending through the first distal opening to a first threader grip end, the first threader loop end defining a suture capture loop; and

a second suture threader extending within the longitudinal passageway, the second suture threader extending through the proximal opening to a second threader grip end and the second suture threader extending through a second distal opening of the anchor body to a second threader loop end, the second threader loop end defining a suture capture loop;

wherein:

the anchor body further comprises a second distal opening;

the first portion of the suture passes through at the first distal opening; and

the third portion of the suture passes through the second distal opening.

10. A knotless suture anchor comprising:

an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an interior longitudinal passageway extending at least partway from the proximal end toward the distal end, a proximal opening communicating with the longitudinal passageway nearer the proximal end, and a first distal opening communicating with the longitudinal passageway nearer the distal end; and

a first portion of a suture extending within the longitudinal passageway between the proximal opening and the first distal opening, a second portion of the suture contiguous to the first portion and extending out of the anchor body through the first distal opening and back into the anchor body through the proximal opening; and

an interference member insertable distally into the longitudinal passageway to secure the first portion of the suture within the longitudinal passageway.

11. The knotless suture anchor of claim 10 , further comprising a third portion of the suture contiguous to the second portion and extending within the longitudinal passageway proximally to distally, and a fourth portion of the suture contiguous to the third portion and extending along the exterior surface distally to proximally.

12. The knotless suture anchor of claim 11 , wherein:

the anchor body further comprises a second distal opening;

the first portion of the suture passes through at the first distal opening; and

the third portion of the suture passes through the second distal opening.

13. The knotless suture anchor of claim 10 further comprising:

a proximal member joined to the anchor body by a frangible connection; and

an inserter operable to engage the proximal member in axial force transmitting relationship.

14. The knotless suture anchor of claim 10 further comprising:

a first suture threader extending within the longitudinal passageway, the first suture threader extending through the proximal opening to a first threader loop end and the first suture threader extending through the first distal opening to a first threader grip end, the first threader loop end defining a suture capture loop; and

a second suture threader extending within the longitudinal passageway, the second suture threader extending through the proximal opening to a second threader grip end and the second suture threader extending through a second distal opening of the anchor body to a second threader loop end, the second threader loop end defining a suture capture loop.

15. The knotless suture anchor of claim 10 , wherein the interference member secures the first portion of the suture within the longitudinal passageway by compressing the first portion between the interference member and the anchor body.

16. A knotless suture anchor comprising:

an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an interior longitudinal passageway extending at least partway from the proximal end toward the distal end, a proximal opening communicating with the longitudinal passageway nearer the proximal end, and a first distal opening communicating with the longitudinal passageway nearer the distal end;

a first portion of a suture extending within the longitudinal passageway between the proximal opening and the first distal opening, a second portion of the suture contiguous to the first portion and extending out of the anchor body, a third portion of the suture contiguous to the second portion and extending within the longitudinal passageway proximally to distally, and a fourth portion of the suture contiguous to the third portion and extending along the exterior surface distally to proximally; and

an interference member insertable into the longitudinal passageway to secure the first portion of the suture and the third portion of the suture within the longitudinal passageway, independently of passage of the first portion and the third portion through the interference member.

17. The knotless suture anchor of claim 16 further comprising:

a proximal member joined to the anchor body by a frangible connection; and

an inserter operable to engage the proximal member in axial force transmitting relationship.

18. The knotless suture anchor of claim 16 wherein:

the anchor body further comprises a second distal opening;

the first portion of the suture passes through at the first distal opening; and

the third portion of the suture passes through the second distal opening.

19. The knotless suture anchor of claim 16 further comprising:

a first suture threader extending within the longitudinal passageway, the first suture threader extending through the proximal opening to a first threader loop end and the first suture threader extending through the first distal opening to a first threader grip end, the first threader loop end defining a suture capture loop; and

a second suture threader extending within the longitudinal passageway, the second suture threader extending through the proximal opening to a second threader grip end and the second suture threader extending through a second distal opening of the anchor body to a second threader loop end, the second threader loop end defining a suture capture loop.

20. The knotless suture anchor of claim 16 wherein the interference member secures the first portion of the suture and the third portion of the suture within the longitudinal passageway by compressing the first portion and the third portion between the interference member and the anchor body.